Antiscald-valve.



VW. H. DEHN.

ANTISGALD VALVE. PPLIOATION FILED NOV. 9, 1908I- 967,339. Patented Aug. I16, 1910.

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W. H. DBHN. ANTISGALD VALVE. APPLIoATxoN FILED Nov. 9, 1908'.

Patented Aug. 16, 1910.`

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sfrarns PATENTA OFFICE.

WILLIAM H. DEHN, CLEVELAND, OHIO, ASSIGNOR TO SANITARY COMPANY,' CLEVELAND, OHIO, A CORPORATION 0F lOHIO.

ANTIsoiiLn-winvn.

@@7339 lSpecification of Letters Patent. Patented Aug, 16, 1910;

To atl whom it may'concem. A

Bc it known that I,WILLIAMH. DEHN, a valve, the general shape of which is annucitizen of the United States of America, relar and which is provided with a removable siding at Cleveland, in thecounty of Cuyacover 11 having a threaded flange 12 which Vhoga and State of Ohiofhave inventedcerlis screwed into the front portion of the castani new and useful Improvements in Anti* ing. The casing is provided on the interior scald-Valves; and `I hereby declare the folwith a vertical 'Wal orV partition 13 which y lowing to be a fall, clear, and exact descri divides the same into `two compartments 14 scald valves.

tion of the invention, such as will enab e and 15, the chamber 121 constituting the mixothers skilled in the art to which it per-` ing' chamber and the chamber 15 which is tains to make and `use the same. formed'by the partition 13 and removable This invention-relates to improvements in oo ver 11 eilig adapted to receive and conwater supply valves and particularly to the tain the main parts 4of the valve operating ing, 10 represent-s the main casing of the type of valves known as mixing or nonmechanism. `As will appear later, therwater V which passes through the valve does not The Object of the invention is to provide enter this chamber 15, and consequently the a valve which is adapted to be connected t0 Valve Operating' mechtllllsm 1S @Hilely PTO* Aboth hot `and Coldwater supply,and having eCed from the action of the Water passing al construction and arrangement such that thl'wghtlle VfllVe and: therefore no rit or either hot or cold water may be drawn -Ohei` foreign substances can be deposited on Separately 0I- `3J nxture 0f the tw() C811 be the VVOI'kll'lg pi/LIS SO aS @0 Cil'llSe `llftdue VVQLI' Obtained in Such proportiong as give the tllGleOf. Ai? the Same tlm@ 3. lllbllcallt C3111 temperature desired. be always kept on the operating mechanism More specifically 'the inventionrelates to WthOUt danger .0f mplegnating the Watera valve having a casing which'is provided HOVHg through Ehe WN@ with, a mixing chamber havinginlet open Th@ Chemel 1S pI'OVlded preferably at ings for both hot and cold water, and with QPPOSIG SldeS Wlth two extensions or proan outlet opening through which water of Jections 16 and 17. At the outer or free any desired temperature maybe drawn, ends of the extensions 16` and 17 respec- The Supplyvof Water through the hot' and i'ilvely 31'6 Valve 56.31138. and VtlV inlet Openpoid waarv inlet; openings is controlled by lngs 18 and 19, sald inlet openings commutwo movable valve members which may be meeting With the 'mixing chamber by means shifted by operating' mechanism preferably of lpassageways 20 and 21 which are preflocated in a second compartment or chamber i,n lla 1y cored in n the extensions or projecof the casing, and by af sin 1e stem and tions. Intermediate the two extensions 16 handle,` the position of whic determines and 17 through Which the hot and cold 7 the temperature of water which is drawn Water is supplied to the mixing Chambelalld from the chamber. inthis case at the top of the chamber, is a My invention may be further briey sumthird extension or projection 22 having a y niarized as consisting in certain novel de: passageway or opening which communitails ofjconstriiction and combinations and cates with the mixing chamber and constiarrangements of parts described in the tutes the outlet passageway for the Valve. specication, set forth in the appended This extension 22 is threaded so that a pipe 'claims'a'nd illustrated in the accompanying may be readily connected thereto for condi'awings veying the water to any'suitable sink, bowl For a better understanding of my invenor other device of a similar nature. Short tion reference is had to the accompanying pipes or nipples 24.- and 25, in the present drawings, inwhichcase in the or'in of elbows, are connected to Figure 1 is a front elevation of a valve the extensions 16 and 17 by means of unions constructed in `accordance with my inven- 26 aiid27. As here shown the outer ends 4line 4 4, Fig. 2.

tion.y Fig'. 2 is a horizontal section. of the of the extensions are provided with extersaine. Fig. 3 is a vertical section on line nal flanges 28 and 29 threaded on the ex- 3`-"3, Fin'. 2. Fig. It is avertical section on terior, and the adjacent ends of the elbows H are provided with unthreaded external Referring now to the ligures of the draW- flanges which lengageV or abutV against the outer faces of the extensions. The parts are held in this position by the unions with the openings or passageways of the elbows located centrally or in line with the valve seats and valve openings at the outer ends of the extensions, the unions having threaded portions which engage the threaded flanges of the extensions, and inwardly ex-v tending flanges 30'and l31 which engage the external flanges of the elbows. By means of these unions and with the construction shown, the elbows can be arranged at any vdesired angle and they joints or connections can be tightened without a removal or displacing of any parts being necessary.

The mechanism for controlling the valve openings which communicate with the mixing chamber will now be explained. The

. 2b Vertical wall or partition 13 isprovided on valve stem 39 whlch extends outwardly vin ` l chamber 15.

-boss or lug through the vwall of the chamber 15 and 'the extension 16, andI through the valve opening 18 at its outer end, and is provided at its outer end with a movable valve member 40 which is adapted lto engage the valve seat at the outer end of the extension 16, and to be moved outward into the elbow 24 to permit water to flow through the valve opening into' the mixing chamber 14. lA suitably threaded plug 41 surrounds the stem 39 and is secured in a threaded openin the wall of the chamber so as to ho din position packing 42 which prevents the leakage of water from the passageway 20 into the chamber 15. In a similar manner there is secured to the block 34, a valve stem 48 which extends outwardly in the opposite direction with respect to the stem 39, and is rovided at its outer end with a movable va ve member 44 which is adapted to engage the valve seat at the outer end of the extension 17 and to-control the water which is adapted to be supplied through the rpassageway 21 to the mixingl elbow 25 an chamber 14. his stem 43 is also surrounded by a threaded plug 45 seated in a threaded opening in the wall of the chamber and packing 46 which prevents the leakage of water from the passageway 21 .into the Extending through the cover 11 and having a bearin in an outwardly project-ing 4% of the cover and having its inner end )ournaled in the partition 13 1s an -ed still operating rod 48 provided at its outer. end with a suitable handle 49 adapted to be turned b hand to operate the valve. The outer en of the boss 47 is threaded and is rovided. with the usual packing gland 50 or preventing the leakage of water about the rod 48.

Secured to the rod 48 on the interior of the chamber 15 is a circular disk 51 provided with'two curved slots 52 and 53 shown most clearly in Fig. 3, which slots receive res ctively the forwardly projecting studs or ugs 37 and 38 on the valve controllin r blocks 33 and 34. These slots are so shaped that w'hen the handle is turned from its normal position or from the position which itr occupies when both the inlet or valve openings are closed, the movable valve member controlling the supply of cold water will be first shifted admitting cold water to the chamber 14; then if the handle is shifted farther in the same direction, the movable valve member controlling the supply of hot water will be also shifted so that both hot and cold water will enter the mixing chamber and will pass outward through the outlet passageway 23; and if the handle is shiftarther in the same direction, the

valve member 'controlling the cold water will be returned to its closed position and the valve member controlling the supply of hot water will be shifted to its full open position so that hot water alone will be supplied to the chamber 14. To accomplish this result, each of the two slots is made concentric with respect to the center of the disk for a portion of its length and eccentric for other portion or portions of its length. 1

By referring particularly to Fig. 3 it will be seen that the two lugs or studs 37 and 38 are at opposite ends of the two slots respectively, and when the disk is in position such that these studs and slots have the relative position here shown, both movable -valve members 40 and 44 will be on their respective valve seats and the supply or How of water will be entirely shut olf. It will be seen that the portion of the slot 52 at the right side of the disk, as shown in Fig. 3,

Vor the Aportion containing the stud 37, is

slightly eccentric with respect to the center of the disk, or curves outwardly from the center. Also the opposite end of the same slot 52 is likewise eccentric, curving from the end away from the center, and the intermediate portion is concentric with the center. The result of thisl construction is that when the disk is rotated in a clock-wise direction, the stud 37 will be shifted outward a slight distance, by the eccentric ortion, will then remain stationary while t e concentric portion ofz the slot passes the stud, and `will again be moved inward by the opposite end or rear portion of the slot, which portion is alsoeccentric. The end of slot 53 which is adjacent pr which contains the stud 38, 1s concentric with respect to the center of the diskhwhile the opposite end is curved slightly outward or is eccentric, the slotvbeing eccentric for about heli vits length. The

result of this construction is that when the disk. .1s rst turned from the position shown inITig. 3, the stud 38 and block 34 which carries the stud will remain stationary, but durin the latter part ot the movement of the disk, or as the eccentric -portion of the slot passes the stud, thelatter will he shifted outward, and whenthe end of slot 53, on the' right side of Fig. 3 reaches the stud -38 the latter 'will be shifted its full amount from the normal position.

'Io 4prevent the Awater supplied through one elbow backing up into the other elbow Y in casetheghot and Coldwater A'ressures are unequal I'Ahave provided chec v val-ves..for the elbows. Inthe present case/the outer ends of the elbows are provided withvalve lplugs 54- and 55.which a're screwed into the outer ends of the elbows, and these plugs are provided at their inner ends with valve seats 56 and 57 adapted to be engagedQby movable check valve members 58' andk 59 having Shanks 60l and 6].v which extend loosely into the valve plugs. Anysuitable means may be' provided for .limiting the movement of the valve members 58 and 59 awayl from'their seats, but in the present case I provided fot' this purpose transverse members 62 and located in the ends of the elbows a short distance from the valveseats. It will be/ seen that with this construction the check valves may be openedby the pressure of water in the supply ipes so as to permit the tlow of hot and cold) water into the mixing chamber,

but in case the pressure in the mixing cham' ber exceeds the pressure in either one of the supply pipes, the corresponding check valve will prevent the water backing up into the pipe having the lower pressure.

At the front of the casing there is 'provided a segment-shaped, plate 64 on which' are printed the words Shut, Cold, Warn1, and Hot arranged inthe order named, and the operating rod 48 has secured thereto an indicator 65 which is adapted to register.

' ters with the wordt Shut and the handle is in the position shown'in Fig. 1 the studs on the sliding. blocks which control the valves *are .iat opposite ends of the slots in the disk and both the valve openings are closed. A s the handle and operating rod are turned so that the indicatorpoints to the word Cold the rotation of the disk will cause the stud on the block which operates, the cold' water valve to move outward since this stud during this movement engages the eccentric por- `tion of theslot, but the stud on the block which controls the hot water valve will not be moved since it engages the concentric por- 'tion of the other slot.I As the handle is turned farther so that the indicator points to the word Warm 77-thestud which con trols the vhot water valve as well as the cold water valve will he open permitting both -hot and cold Water to enter the 'mixing' chamber. As the operatinghandle is movedstill farther, the stud ont-he block controlling.

the cold water valve will gradually move inward while the stud on the block controlling the hot water valve will move outward still farther, andwhen the handle is moved to a position such that the indicator vregisters with the word Hot. the valve `controlling the cold Water will be closed and the valve controlling the hot Water will be in full open position.` Whenthe handle 4is 1n'th1s 'position hot water alone will be 'admitted to the mixing chamber.

' I do not desire to cover all modifications which d o not involve be `confined to the exact `details shown, but ,f aim 1n my claims to a departure from'the spiritvaind scope of my invention.

1. In a mixing valve, in cohbinatlon, a casing having a partition dividing the same into two main compartments or chambers,

one of which constitutes the mixing chamber and having projections or extensions,

each of said extensions being provided at its outer end with a valve seat and with ajvalve opening which communicates with the mixing chamber, said valve openings being adapted to supply hot and cold water. re-

spectively, movable valve members arranged t9 engage said valve seats and to control the supply of hotand cold water to sa1d mlxlng chamber, and means for shiftmg said valve members comprising a rotatable rod orstem l projecting from-said vcasin a rotatable disk secured to said rod in sai second compartment, said disk having two slots, each provided with portions eccentric andconcent'ric with respect to the centerofthe disk, said A parti-tionl having on one side a guide-way,

valve operating blocks engaging said guideway 'and having portions engaging respectively the slots of said disks, said blocks being connected `respectively to sald movable valve members.

2 In combination, in a' mixing valve, a

casing having a mixing chamber provided with valve openings for the supply ofhot:

and cold Water respectively and with an outlet opening, movable valve members for said valve openings, and means for shifting said valve members comprising a rotatable lrod or stem projecting from said casing, a

,with inlet or valve openings for the supply 20A of hot and cold water respectively and With an outlet opening, movable valve members controlling the supply of water through said valve openings, said valve membershalving inwardly projecting valve stems, and means for shifting said valve members comprising a rotatable rod projecting from the casing, said rod'having a rota-table disk,- provided, with two slots, one of 'which slots is eccentric at both ends and concentric at its middle portion with respect to the center of the disk and the other slot is eccentric from one end thereof toward the middle and concentric from the other end toward the middle portion-thereof with respect to the center of the disk and devices arranged to slide inward and outward, said devices being con' nected to said inwardly extending valve stems and engaging respectively the slots of said rotatable disk.

4. In combination, in a mixing valve, a casing divided into tWo main compartments or chambers, one of said chambers constituting a mixing chamber and being provided with valve openings for the supply of' hot and cold water respectively and with an outlet opening, movable valve members coperating with said valve openings, so as to control the supply of hot and cold water, said valve members having inwardly projecting valve stems, and means for shifting said valve members comprising'a rotatable rod projectingfrom the easin a rotatable disk secured to said stem, sai disk having two slots, one of which slots is eccentric at both ends and concentric at its middle portion with respect to the center of the disk and the other slot is eccentric from one end thereof toward the middle portion thereof with respect to the center of the disk and valve operating blocks mounted for sliding movement, said blocks having portions engaging the slots of the disk and being conneeted to the two valvestelns respectively, said disk and sliding blocks being in the other of said chambers.

In testimony whereof, I sign the foregoing specication, in the presence of two witnesses.

IVILLIAM H. DEI-IN. IVitnesses z Vieron (l LYNCH, `N. L. Metier-:NELL 

